470 results about "Demulsifier" patented technology

The invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and a preparation method thereof, and relates to the technical field of petrochemical engineering, and the preparation method is characterized by comprising the following steps: compounding cardanol, pentaethylenehexamine and bisphenol F according to a specific molar ratio to obtain an initiator, and carrying out formaldehyde condensation to prepare a composite initiator; epoxypropane and ethylene oxide are grafted through staged block copolymerization to form a polyether skeleton; introducing a fluorine-containing epoxy monomer to carry out terminal fluorination modification; finally, adipic acid and epichlorohydrin are subjected to chain extension crosslinking, and the demulsifier with the molecular weight being 8000-12000 Da, the fluorine content being 5.5-6.5 wt% and the PDI being smaller than or equal to 1.3 is prepared. The low-temperature demulsifying agent has the effects of realizing efficient demulsification at low temperature, improving the demulsifying efficiency and reducing the dosage through coordination of the composite initiator, super-hydrophobic permeation of the fluorinated block and accurate regulation and control of the molecular weight, solving the problems of low-temperature failure and easiness in emulsification of a traditional demulsifying agent, and meeting the requirements of low-temperature working conditions of oil and gas gathering and transportation.

The invention belongs to the technical field of emulsified oil recovery, and particularly relates to a method for recovering emulsified oil generated by preparing an alumina carrier through an oil column forming process. The emulsified oil recovery method comprises the following steps: adding ammonia water into emulsified oil, stirring, preserving heat, centrifuging, collecting upper-layer floating oil A, and removing bottom-layer water and impurities to obtain a first-stage emulsion; adding ammonia water into the primary emulsion, heating by using a heat source until the temperature is higher than 100 DEG C, then stopping heating to obtain a demulsified primary emulsion system, carrying out centrifugal treatment, collecting upper-layer floating oil B, removing bottom-layer water and impurities, and remaining a secondary emulsion; combining the collected upper-layer floating oil A and the collected upper-layer floating oil B, distilling and removing water to obtain an oil body A; carrying out vacuum distillation on the secondary emulsion to remove water, and centrifuging to remove impurities at the bottom layer to obtain an oil body B; and finally, combining the oil body A and the oil body B to obtain recovered oil. The method does not need to add organic auxiliaries such as a demulsifier, the recovery process is simple and easy to control, the treatment temperature is low, the recovered oil quality is good, and the recovery rate is high.

The invention discloses a macromolecular demulsifier as well as a preparation method and application thereof, and belongs to the technical field of oil exploitation. The polymer demulsifier has a structure as shown in a formula (I): # imgabs0 # formula (I); wherein R is selected from any one of NH2-(CH2CH2NH) m-CH2CH2, and m represents an integer from 1 to 4; n represents an integer from 25 to 600; a represents an integer from 60 to 200; and b represents an integer of 40-150. The macromolecular demulsifier has a good demulsification effect, improves the water phase cleanliness of demulsified dehydrated water, is suitable for various working conditions and environments, and solves the problem of difficulty in treatment of crude oil produced in oil fields in the prior art.

The invention relates to the field of demulsifiers, in particular to an oil sludge demulsifier as well as a preparation method and application thereof. The oil sludge demulsifier comprises the following components in parts by mass: 20-35 parts of a surface active compound, 7-12 parts of a sodium alkyl sulfate cosolvent, 0.6-1.8 parts of a stabilizer and 48-55 parts of water, wherein the surface active compound comprises hyperbranched polyamidoamine and polyether amine modified magnetic nanoparticles. According to the oil sludge demulsifier, the problems that most of existing demulsifiers are small in dehydration amount, low in dehydration speed, poor in demulsification effect and low in treated oil content are solved, the demulsification performance of the oil sludge demulsifier is improved, the demulsification and dehydration efficiency is improved, and effective separation of oil sludge is achieved.

The invention relates to the technical field of water treatment, and discloses a silicon powder conditioner and a preparation method thereof, the silicon powder conditioner comprises 20-40% of an inorganic coagulant, 5-15% of an organic polymer coagulant, 3-10% of a natural polymer coagulant aid, 10-25% of a demulsifier, 2-8% of a synthetic coagulant aid, and the balance of water. The demulsifying agent is compounded with various coagulants and coagulant aids, the demulsifying agent preferentially destroys an oil-water interfacial film, releases wrapped silicon powder and eliminates the'colloid protection 'effect of oil stains on the surface of the silicon powder, and the inorganic and organic coagulants rapidly perform electrical neutralization and adsorption bridging on exposed silicon powder particles to form floc which is good in settling performance and easy to filter. Meanwhile, the inorganic coagulant provides positive charges and efficiently neutralizes the microfine silicon powder with negative charges; cPAM with high molecular weight and PDADMAC with strong cations form long-chain bridging and patching effects, so that fine particles with the particle size of 1-5 microns are specially captured, and meanwhile, larger-particle silicon powder is improved to form floc which is easy to filter; the natural polymer further increases the volume and density of the floc, and prevents the floc from being broken under shearing.

The invention provides an integrated medical waste liquid advanced treatment device which comprises a treatment tank body, a separation cylinder and an interception filter plate at the lower end are arranged in the treatment tank body, the top of the separation cylinder is connected with a water inlet pipe, a rotating shaft driven by a first motor is arranged in the middle of the separation cylinder, and a spiral net plate is arranged on the shaft. An assembly for adding a demulsifier through a rotating shaft is arranged at the bottom of the tank, and an ultraviolet ozone co-processing assembly is arranged above the interception filter plate. A biological carrier column is contained in the reaction cylinder, a uniform water distributor is arranged at the bottom, and a top sealing cover is connected with a water outlet pipe through a connecting pipe. And the aeration water delivery assembly delivers the water treated by the ultraviolet ozone to the water distributor, so that the multi-stage advanced treatment of the waste liquid is realized. Through efficient multi-stage treatment technologies such as solid-liquid separation, demulsification, ultraviolet ozone oxidation and biodegradation, comprehensive purification of complex medical waste liquid is achieved, and the device has the advantages of being high in treatment efficiency, high in automation degree and remarkable in environmental protection effect.

The present application belongs to the technical field of hydrogen engine, and particularly relates to an emulsified machine oil demulsification device and method for hydrogen engine, which can be used for solving the problem of emulsified machine oil of hydrogen engine in cold start or low temperature environment. The device comprises a vortex tube system, an emulsified machine oil heating system, an oil-gas separation system and a double-oil tank interaction system. The vortex tube system is communicated with the engine exhaust pipe to deliver exhaust heat to the emulsified machine oil heating system, and phase change material is used to realize constant temperature heating of the emulsified machine oil. Under the joint action of constant high temperature and demulsifier, efficient demulsification of the emulsified machine oil is realized. At the same time, the cold gas output by the vortex tube system is beneficial to the liquefaction and discharge of the separated water vapor. The double-oil tank interaction system can separate the emulsified machine oil and non-emulsified oil, so that the machine oil passing through the hydrogen engine oil pump is non-emulsified oil, and the normal lubrication of the hydrogen engine is ensured. The energy of the whole system comes from the engine exhaust energy, without additional energy, which conforms to the idea of energy saving and emission reduction.

The invention belongs to the technical field of hydraulic oil preparation, and particularly relates to anti-wear hydraulic oil and a production process thereof. The anti-wear hydraulic oil is prepared from the following raw materials in percentage by mass: 2 to 2.2 percent of an anti-wear complexing agent, 0.002 to 0.003 percent of a demulsifying agent, 0.001 to 0.0015 percent of an anti-foaming agent, 0.03 to 0.04 percent of an anti-rust agent, 0.1 to 0.3 percent of a pour point depressant, 0.3 to 0.5 percent of a dispersing agent and the balance of base oil. According to the anti-wear hydraulic oil disclosed by the invention, a mixture of 500N II type base oil, 100N III type base oil, CTL 4 base oil and trimethylolpropane trioleate is used as base oil, and an anti-wear complexing agent, a demulsifier, an anti-foaming agent, an anti-rust agent, a pour point depressant and a dispersing agent are added into the base oil; the prepared anti-wear hydraulic oil is ensured to have excellent extreme pressure property, thermal oxidation stability and wear resistance.

A hyperbranched polymer and a preparation method therefor and the use thereof. The hyperbranched polymer comprises a structural formula of formula 1, wherein R is selected from a substituted or unsubstituted C12-C18 alkyl. The hyperbranched polymer, which is used as a demulsifier for demulsifying crude oil emulsions, exhibits a high demulsification efficiency, a low usage amount, a low demulsification temperature, a high acid and alkali resistance, and a high salt resistance. The demulsifier has a high demulsification performance in oil-water emulsions with various properties.

The invention discloses an emulsion wastewater treatment system, and relates to the technical field of wastewater treatment. A water inlet device is fixedly mounted on the wastewater tank; a demulsification agent box and a flocculation agent box are arranged on two sides of the wastewater tank; a stirring rod is rotationally mounted in the wastewater tank and is in sliding connection with a first bevel gear; the first bevel gear is meshed with a second bevel gear; the second bevel gear is fixedly provided with an output shaft of a first motor, the output shaft of the first motor is fixedly provided with a cam, the protruding face of the cam makes contact with a limiting disc, and the limiting disc is fixedly installed on the stirring rod. The first motor drives the stirring rod to rotate and move up and down, so that uniform stirring of wastewater at different heights in the wastewater tank is realized, and the stirring efficiency and the wastewater treatment effect are improved; the rubbing mechanism is arranged, so that the cleaning circular ring rubs up and down along the inner wall of the wastewater tank, chemical residues are removed, and the emulsion wastewater treatment efficiency is improved.

Disclosed in the present invention are an ionic liquid demulsifier and a preparation method therefor and a use thereof. The ionic liquid demulsifier of the present invention has a structure as shown in formula I, wherein in formula (I), m=1-16, n=3-5, and i=1-16. The ionic liquid demulsifier has excellent interfacial activity and can quickly migrate to an oil-water interface to reduce the tension of the oil-water interface, so as to destroy an interface film composed of asphaltenes, and promote occurrence of a demulsification process. The ionic liquid demulsifier provided by the present invention has the characteristics of simple synthesis steps, small dosage, good acid-base tolerance, low demulsification temperature, high demulsification efficiency and the like, and can be used for demulsifying crude oil emulsions.

The invention relates to a preparation method of a low-temperature crude oil demulsifier, which comprises the following specific steps: preparing block polyether by using propane diamine as an initiator and using epoxypropane and ethylene oxide as main agents, then grafting by using an organic silicon chain, and modifying by using isocyanate. The invention also relates to a low-temperature crude oil demulsifier. Compared with the prior art, the invention has the following beneficial effects: according to the technical scheme, isocyanate is used for modifying the whole block polyether molecular chain, the demulsification effect of the demulsifier can be obviously improved, and meanwhile, after organic silicon and isocyanate are used for modification, the application temperature of the demulsifier is positively influenced; the low-temperature crude oil demulsifier prepared by adopting the preparation method disclosed by the invention is high in demulsification speed and good in demulsification effect under a normal-temperature condition and can be applied to scenes with high temperature rise difficulty, high demulsification speed requirement and high demulsification performance requirement, and the adopted raw materials are low in price, simple in synthesis method and convenient for large-scale popularization.

The invention relates to the technical field of environmental engineering, and discloses a wool washing wastewater recovery treatment process which comprises the following steps: S1, carrying out demulsification pretreatment on wastewater through bionic nano-enzyme and recovering wool fat, S2, carrying out supercritical water gasification reaction on the pretreated wastewater, synchronously decomposing organic matters and generating hydrogen, the method comprises the following steps: S1, gasifying effluent, S2, carrying out gasification on the effluent, S3, carrying out filtration and biodegradation on the gasified effluent by adopting a self-energy-supply dynamic membrane bioreactor, S4, carrying out deep purification on membrane effluent through a photocatalysis-microalgae coupling system, and S5, coordinating operation of the whole system through an intelligent control algorithm based on real-time monitoring data. According to the method disclosed by the invention, the technical effects of efficiently recovering the wool fat and improving the oil-water separation selectivity are achieved by adopting a technical scheme of synergistically enriching and demulsifying the magnetic response bionic nano-enzyme and the high-gradient magnetic field; the problems of high reaction residue, serious secondary pollution and easy enzyme inactivation are solved.

The invention relates to the technical field of industrial wastewater treatment, and discloses a treatment method for grinding fluid wastewater of a grinder, which comprises the following steps: pretreatment and demulsification, multi-stage chemical purification, biochemical deep treatment, deep purification and recycling, and sludge treatment. A specific supported heterogeneous catalyst is adopted in the multi-stage chemical purification step, nano zero-valent iron and copper oxide composite active components constructed on the surface of the catalyst can enhance the generation efficiency and stability of free radicals in the advanced oxidation process, and a composite coagulant with an optimized ratio in the coagulating sedimentation step is cooperated, so that the purification efficiency of the high-grade oxidation process is improved. An efficient continuous removal system for heavy metal ions and refractory organic pollutants is formed; meanwhile, in the pretreatment step, the demulsifier is composed of specific components, through the synergistic effect of all the components, rapid demulsification of the emulsified oil phase in the grinding fluid wastewater is achieved, favorable conditions are created for subsequent deep treatment, and therefore the purification efficiency and operation stability of the technology are overall improved.

The utility model discloses quality detection equipment for demulsifier production, which comprises a lantern ring, the inner side of the lantern ring is movably connected with a reaction vessel, a first motor is turned on to drive a screw rod to rotate, a slide block and a lifting arm on one side of the slide block are matched with a scaleplate of the scaleplate to descend to the height that a stirring blade is immersed into a solution in the lantern ring, and the reaction vessel is connected with the reaction vessel. Turning on a second motor to drive stirring blades to stir the solution through rotation of a rotating shaft, observing the state of the solution to judge the use effect of the demulsifier, finally performing reverse operation, lifting a lifting arm to the position where the stirring blades are separated from the inner side of the reaction vessel, taking out the reaction vessel, and treating the tested solution in the reaction vessel. According to the device, the situation that a mixed solution needs to be manually stirred by personnel can be effectively avoided, physical exhaustion of the personnel is reduced, after detection is finished, an external cable is connected with a wiring terminal, an electric heating piece is heated, the residual solution in a reaction vessel is dried in an auxiliary mode, the drying efficiency is improved, and the risk of bacterium breeding is reduced.

The invention relates to a mud sediment purification method and device, and belongs to the technical field of mud sediment purification. By adding a gel breaker and combining oxidation / acidolysis and thermochemical treatment, stable structures of colloidal particles are destroyed, wrapped fine particles are released, and a surfactant is further added in a partitioned manner by adopting a spiral path, so that the mud sediment purification effect is improved. And stirring is combined to ensure uniform diffusion of the agent, obviously reduce apparent viscosity of the slurry and improve fluidity. Afterwards, the centrifugal-shear synergistic effect of the high-speed centrifugal machine and the hydrocyclone is used for enhancing the particle separation efficiency, shortening the retention time and inhibiting the laminar flow blockage risk; meanwhile, an electric field is applied to drive charged particles to be enriched towards an electrode area. Finally, the water content of the slurry is greatly reduced through a deep dehydration process assisted by a filter aid, and the integrated process not only reduces the hydrodynamic resistance and treats volume expansion, but also remarkably relieves the problems of laminar flow retardation, abrasion and frequent blockage of pipelines and equipment.

The invention discloses a method for simulating settlement change of water-containing emulsified crude oil of an offshore platform. The method comprises the following steps: establishing other substance components except crude oil according to related physical property parameters of the crude oil extracted from the offshore platform; according to test data of crude oil extracted from the offshore platform, oil cutting is conducted on the crude oil composition, and crude oil virtual components are generated; according to the water content test data of the extracted crude oil, virtual components used for representing the emulsion in the water-containing crude oil are established; according to related equipment parameters of an offshore platform oil treatment separator, a water-containing emulsified crude oil settlement change model of the separator is constructed; values are taken according to related production data of the oil treatment separator and according to a time sequence; according to the change model and the time sequence values of the related parameters, coupling a regression equation of the demulsifier concentration to the water content of the settled water-containing emulsified crude oil; and solving the change model by adopting a simultaneous solution method. According to the simulation method, the reliability and effectiveness of separator moisture content analysis are improved.

The invention discloses a multistage separation method of oil in dimethyl dichlorosilane hydrolysis byproduct acid, which is used for removing organic oil impurities in dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid, and comprises the following steps: S1, static pre-separation: introducing the dimethyl dichlorosilane hydrolysis byproduct hydrochloric acid to be treated into a static settling tank; most easily separated oil drops in the byproduct hydrochloric acid are removed; s2, introducing the byproduct hydrochloric acid treated in the step S1 into a high-shear device, adding a polymer demulsifier, and stirring to promote oil drop coalescence; s3, deeply filtering the demulsified acid liquor by adopting a strong acid-resistant, temperature-resistant and anti-pollution ceramic membrane, and intercepting fine oil drops; and S4, introducing the byproduct hydrochloric acid filtered in the S3 into an activated carbon adsorption column, and adsorbing residual trace soluble organic matters and pigments. Compared with the prior art, the multi-stage separation method for the oil in the dimethyl dichlorosilane hydrolysis byproduct acid has the advantages of being convenient to operate and use, efficient, low in cost and environmentally friendly.

The present application belongs to the technical field of electric field separation device, and particularly relates to an electric field enhanced oil-water separation equipment, which comprises a separation cylinder, a liquid inlet pipe communicated with the middle of one side of the separation cylinder, a drain pipe communicated with the bottom of the other side of the separation cylinder, a sealing part detachably connected to the top of the separation cylinder, an electrolytic stirring assembly arranged in the middle of the sealing part and arranged in the separation cylinder, a floating scum separation assembly arranged on the upper part of the inner side of the separation cylinder, an exhaust part installed on the sealing part and having an air inlet end communicated with the inside of the separation cylinder, a feeding part installed on the sealing part and having a material outlet end communicated with the inside of the separation cylinder, and a blowdown part coaxially fixed to the bottom of the separation cylinder and having a material inlet end communicated with the inside of the separation cylinder. The electrolytic stirring assembly is arranged to split the oil liquid into small oil droplets, and the demulsifier is mixed with the oily sewage more uniformly, so that the demulsification effect is improved, the generation of flocculation is improved, and the oil-water separation efficiency is improved.

The utility model belongs to the technical field of electro-desalting, and particularly relates to a heavy crude oil electro-desalting device. Comprising a crude oil heat exchanger before removal, a first electric desalting tank, a second electric desalting tank, a third electric desalting tank, a crude oil heat exchanger after removal and a flash tower which are connected in sequence, and further comprises a fourth electric desalting tank and a fifth electric desalting tank which are connected with the first electric desalting tank and the second electric desalting tank in parallel, inlets of the first electric desalting tank, the second electric desalting tank, the third electric desalting tank, the fourth electric desalting tank and the fifth electric desalting tank are provided with water injection pipelines, the inlets of the first electric desalting tank and the fourth electric desalting tank are also provided with crude oil flow regulating valves, and an inlet pipeline of the crude oil heat exchanger before desalting is connected with a demulsifying agent pipeline. Through the multi-stage electric desalting treatment and intelligent response control technology, the desalting efficiency is remarkably improved, the energy consumption is reduced, the service life of equipment is prolonged, the operation process is simplified, the adaptability of the device is enhanced, and efficient, energy-saving, durable and easy-to-operate crude oil desalting treatment is realized.

The invention relates to a biodegradable hydraulic oil composition and a preparation method of hydraulic oil, and relates to the technical field of hydraulic oil compositions.The hydraulic oil composition comprises, by weight, 20-37% of ester oil, 5-10% of refined vegetable oil and 5-10% of a demulsifier, and the total weight of the ester oil, the refined vegetable oil and the demulsifier is 100%. The content of the refined vegetable oil is 62-79.9 wt%, the content of the demulsifier is 0.1-1 wt%, and the preparation method of the refined vegetable oil comprises the following steps: pre-loading a nanocapsule with an antioxidant as an inner core in activated clay, loading the activated clay pre-loaded with the nanocapsule into deacidified oil, and filtering to obtain the refined vegetable oil. The hydraulic oil composition disclosed by the invention has excellent biodegradability and also has the technical effects of relatively good oxidation stability and viscosity-temperature property.

The invention discloses an energy-saving kitchen solid residue treatment system and process, the energy-saving kitchen solid residue treatment system comprises a hydrothermal reactor, a flash evaporation reactor, a material buffer tank, a filter press, a demulsifier, an oil-water separator, an MVR evaporator, a drying machine, a mixing granulator and a heat pump recovery system, the flash evaporation reactor is communicated with the hydrothermal reactor, the material buffer tank is communicated with the flash evaporation reactor, and the material buffer tank is communicated with the filter press. The filter press is communicated with the material buffer tank, the demulsifier is communicated with the material buffer tank, the oil-water separator is communicated with the demulsifier, the MVR evaporator is communicated with the oil-water separator and the filter press, the drying machine is communicated with the filter press and the MVR evaporator, and the mixing granulator is communicated with the drying machine and the oil-water separator. The heat pump recovery system is communicated with the hydrothermal reactor, the flash evaporation reactor, the MVR evaporator and the drying machine. The conveying efficiency can be improved, the dewatering efficiency can be improved, the filter cloth is easier to clean, the drying efficiency is improved, the energy consumption required by drying is reduced, and pollution emission and resource waste are reduced.

This invention discloses a demulsifier for polymer flooding crude oil produced fluids, its preparation method, and its application, belonging to the field of chemical additives for petrochemicals. The technical solution includes a main agent, an auxiliary agent, a penetrant, and water; the main agent is a polyene-polyamine block polyether, the auxiliary agent is a triethanolamine block polyether quaternary ammonium salt, and the penetrant is selected from at least one of methanol, ethanol, ethylene glycol, and diethylene glycol butyl ether; in the demulsifier, the ratio of the main agent to the auxiliary agent is 4-9:1, the amount of penetrant is 30% of the total amount of the main agent and auxiliary agent, and the amount of water is 70% of the total amount of the main agent and auxiliary agent. This invention, applied to demulsification of polymer flooding crude oil produced fluids, features high demulsification efficiency and rapid demulsification effect.

The application provides an absorption liquid for absorbing asphalt fume and oil mist waste gas, a preparation method and application, and relates to the field of waste gas treatment. The absorption liquid is prepared from the following raw materials in mass percentage: polyethylene glycol dimethyl ether 60-80%; demulsifier 5-15%; dispersion polymerization inhibitor 3-10%; oxidant carrier 1-3%; slow-release particles 2-9%; cosolvent 5-12%; and defoaming agent 0.1-1%. In the application, the anti-adhesion and polymerization resistance performance are improved through the compounding of various solvents, the continuous operation cycle of the equipment is prolonged to more than 90 days, the pressure difference of the filler is increased by less than 5%, and the frequent shutdown problem caused by asphalt fouling in the traditional technology is completely solved; meanwhile, the demulsification is efficient, the removal rate is high, and another possibility is provided for efficient, green and economic deep treatment of waste gas.

The invention discloses a super-hydrophobic magnetic biochar demulsification degreaser, a preparation method and application, the preparation method comprises the following steps: firstly, preparing biochar from biomass, then loading magnetic nano ferroferric oxide on the surface of the biochar to obtain a magnetic biochar material, and finally, carrying out hydrophobic modification on the magnetic biochar material through n-dodecanethiol to obtain the super-hydrophobic magnetic biochar demulsification degreaser. The magnetic demulsification degreasing agent is prepared. The preparation method is used for reducing the preparation cost of the demulsifier for emulsifying the oily wastewater, improving the oil removal effect and facilitating recovery.

The application discloses a reverse demulsifier composition and relates to the technical field of oil and gas field development. The reverse demulsifier composition comprises 1-4 parts of castor oil and 3-8 parts of cationic polyether in terms of weight parts. The cationic polyether is prepared from a mass ratio of 1:20-80:10-40 of a starter, ethylene oxide and propylene oxide. The starter is prepared by addition reaction of a first monomer and a second monomer. The first monomer is one of polyethylene polyamine or aliphatic diamine. The second monomer is quaternary ammonium salt containing one olefinic bond or epoxy quaternary ammonium salt. The molar ratio of the first monomer to the second monomer is 1:0.2m-0.7m, and m is the number of active hydrogen in the first monomer. The reverse demulsifier composition has good demulsification effect and fast demulsification speed.

The invention relates to the technical field of emulsion separation, and discloses a layered oil-water separation device suitable for emulsion, which comprises a support base, a deceleration base arranged on the top of the support base, a driving source arranged on one side of the deceleration base, a separation cylinder arranged on the top of the deceleration base, and a cover plate arranged on the top of the separation cylinder, an extraction opening is formed in the cover plate, a pull-away pipe is arranged in the extraction opening, a pull-away pipe is arranged on one side of the bottom of the speed reduction base, a filling opening is further formed in the separation barrel, an emulsion and a demulsifier can be added into the filling opening, and a mixing assembly is arranged in the separation barrel; an adjusting assembly is arranged on the inner wall of the separating cylinder; the mixing assembly is used for uniformly mixing the emulsion and the demulsifier in the separation cylinder; the adjusting assembly is used for automatically adjusting the suction height of the extraction opening according to the liquid level height in the separation barrel. Compared with the prior art, the extraction opening is always located at the optimal position of the oil layer, and the oil-water mixed extraction phenomenon caused by liquid level fluctuation of a traditional device is avoided.

The application provides an oil-containing wastewater treatment equipment and method based on low-temperature evaporation, and belongs to the technical field of wastewater treatment. The equipment comprises, which are arranged in series, a demulsifier reaction tank, a polyaluminum chloride reaction tank and a polyacrylamide reaction tank, and oil-containing wastewater flows through the three reaction tanks to realize continuous and staged flocculation; a filter pressing device is communicated with a discharge port of the polyacrylamide reaction tank, and is internally provided with an arc-shaped filter residue assembly, a rotary residue scraping assembly and a filter pressing cleaning assembly, and the three assemblies are cooperated to form integrated operations of filtering, salvaging, filter pressing and cleaning; and a low-temperature evaporation machine is connected to a liquid outlet end of the filter pressing device. The application realizes continuous demulsification and flocculation treatment through the multi-tank series connection, and batch waiting is not needed; the filter pressing device automatically cleans flocculation materials while filter pressing, so that blockage is avoided and manual cleaning is not needed during shutdown. The overall process is closely connected, and the degree of automation is high, so that the oil-containing wastewater treatment efficiency and continuous production capacity are significantly improved, and the water quality after treatment can reach the recycling standard.

The invention relates to a method for improving the dewatering performance of organic sludge by using a polyether demulsifier, and belongs to the technical field of municipal sludge treatment. The epoxyethane / epoxypropane block polyether is utilized to effectively destroy a stable oil-water emulsification system in the organic sludge, reduce interfacial tension and promote water release, and the dehydration performance of the organic sludge is remarkably improved by destroying an oil-water interfacial film structure. By utilizing the method disclosed by the invention, the dehydration efficiency of the organic sludge can be remarkably improved, the capillary water absorption time of the sludge and the specific resistance of the sludge are remarkably reduced, the Zeta potential of the sludge becomes closer to a positive value, the median particle size of the sludge is remarkably improved, and the water content of a sludge cake is greatly reduced; the method is easy and convenient to operate, existing dehydration equipment can be directly utilized, and extra investment is not needed; the adding proportion of the demulsifier can be optimized according to actual sludge characteristics, so that the medicament cost is saved; the method provided by the invention provides an economic and efficient technical scheme for organic sludge treatment and disposal, and sludge reduction and recycling can be promoted.

The utility model relates to the technical field of mixing valves, and discloses a hemispherical electric dewatering and electric desalting mixing valve, which solves the problem that crude oil, washing water and a demulsifier cannot be fully mixed at present, and comprises a valve body, a water outlet pipe and a water inlet pipe are respectively arranged on two sides of the valve body, and flanges are fixedly mounted on the outer sides of the water outlet pipe and the water inlet pipe. A limiting mechanism is arranged at the top of the valve body, a valve element is rotationally connected into the valve body, a valve rod is rotationally connected into the valve body, the valve element is fixedly connected to the outer side of the valve rod in a sleeving mode, the top end of the valve rod extends to the outer side of the valve body and is fixedly connected with a hand wheel, and the valve element is in a hemispherical surface shape. According to the utility model, a certain gap is formed between the valve core and the inner wall of the valve body, so that when crude oil, washing water and a demulsifier flow through the valve body, a backflow area, a countercurrent area and a vortex area can be formed, a strong mixing effect is generated on the crude oil, the washing water and the demulsifier, full mixing is ensured, and salt in the crude oil can be fully dissolved in the washing water.